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ATL User Guide

OM25 O

Optical M

Modem

3.2.2

AC VARIANTS

Figure 6 OM25 AC G.703 120

Ω

with FCPC Optical Connectors

Figure 7 OM25 AC V.35 with SC Optical Connectors

3.2.3

REAR CONNECTORS COMMON TO AC & DC VARIANTS

Optical Connector (depending on variant)

User Data Ports (depending on variant)

OM25 Long Haul G.703 75 ohms

FC/PC & 2*BNC

OM25 Long Haul G.703 120 ohms

FC/PC & RJ45

OM25 Long Haul V.35

FC/PC & 34 way MRAC

OM25 Short Haul G.703 75 ohms

SC & 2*BNC

OM25 short Haul G.703 120 ohms

SC & RJ45

OM25 Short Haul V.35

SC & 34 way MRAC

Ω

Summary of Contents for OM25

Page 1: ...OM25 USER GUIDE...

Page 2: ...elecom Ltd and may not be disclosed or reproduced in whole or in part without their written consent ATL Telecom Ltd 2004 Note The information contained in this document is supplied without liability f...

Page 3: ...ment Electrostatic discharge ESD Warning Antistatic precautions should be observed at all times Power Rating Information AC unit Voltage Range 85V 250V Current Range 50mA Frequency Range 50 60Hz Power...

Page 4: ...sed environment if one or more conditions for an unexposed environment are not fulfilled Unexposed Environment A TELECOMMUNICATIONS NETWORK is considered to be an unexposed environment if the followin...

Page 5: ...3 TERMINAL PORT 12 3 2 REAR PANELS 12 3 2 1 DC VARIANT 12 3 2 2 AC VARIANTS 13 3 2 3 REAR CONNECTORS COMMON TO AC DC VARIANTS 13 4 INSTALLATION 14 4 1 PROTECTIVE EARTH 14 4 2 POWER ON SEQUENCE 14 4 3...

Page 6: ...ENS 25 6 3 2 INFORMATION SCREEN 26 6 3 3 CONFIGURATION SCREENS 27 6 3 3 1 ENTERING INFORMATION 27 6 3 3 2 MOVING BETWEEN CHECK BOXES 27 6 3 3 3 TURNING FUNCTIONS ON AND OFF 27 6 3 3 4 HOW RADIO BUTTON...

Page 7: ...VIA THE FRONT PANEL BUTTONS 51 7 1 INTRODUCTION 51 7 2 OPERATION 51 7 2 1 GENERAL 52 7 2 2 G 703 OPTIONS 53 7 2 3 V 35 OPTIONS 54 7 3 KEYPAD LOCK 54 7 4 AUXILIARY PORT OPERATION 54 8 SPECIFICATIONS 55...

Page 8: ...2 G 703 75 OHM INTERFACE 58 8 7 3 V 35 INTERFACE 59 8 7 4 V 35 EXTERNAL TIMING ADAPTOR CABLE PINOUT 60 8 8 TERMINAL CONNECTION 61 8 9 ENVIRONMENTAL 62 8 9 1 TRANSPORTATION 62 8 9 2 STORAGE 62 8 9 3 O...

Page 9: ...ng a single V35 or G703 interface to the user It delivers framed unframed E1 fractional E1 and N 64kbps services Protocol conversion e g G 703 at the CO and V 35 at the CPE is handled automatically Th...

Page 10: ...r the other as slave The master unit is the source of link management and is able to configure and monitor the slave settings but not vice versa Either master or slave can be set to be CO A simple poi...

Page 11: ...al connection eight status LEDs and three front panel buttons Figure 4 Front Panel 3 1 1 LEDS 3 1 1 1 STATUS Red An urgent alarm is present in the system Amber A non urgent alarm is present in the sys...

Page 12: ...buttons on the front of the OM25 Local Loop Loop Back and Remote Loop In Normal mode the buttons can be used to setup various test loops In Programming mode the buttons are used to configure the OM25...

Page 13: ...tors 3 2 3 REAR CONNECTORS COMMON TO AC DC VARIANTS Optical Connector depending on variant User Data Ports depending on variant OM25 Long Haul G 703 75 ohms FC PC 2 BNC OM25 Long Haul G 703 120 ohms F...

Page 14: ...afety Statements at the front of this User Guide 4 2 POWER ON SEQUENCE The power up sequence will begin after power is applied Desktop units require a 48V dc or 110 230V ac input depending on the vari...

Page 15: ...lied set with the following default settings General Mode Slave CPE User Port Rate n 32 2048kbps V 35 Interface Enable Loops Enabled End to End Signalling Off Circuits 106 107 109 On Timing Loop G 703...

Page 16: ...smitted across the link Their states are only relevant to the local unit 5 1 3 SIGNALLING CIRCUIT OPTIONS 106 Normal Set On 107 Normal Set On 109 Normal Set On Circuits 106 107 and 109 can act accordi...

Page 17: ...em is used to denote the state of the appropriate signal at the remote end For 106 Set On 106 is ON in all cases This is the factory default When 106 is following 105 there is a delay of 16ms in the O...

Page 18: ...ng Each modem receives timing from its terminal and passes it to the far end Fig 9 Through timing 5 2 1 2 LOCAL TIMING In Local timing mode the clock source inside the CO is the reference clock for th...

Page 19: ...of Signal LOS 5 2 2 2 STRUCTURED MODE In structured mode the modem aligns to the incoming G703 frame from the terminal and extracts the data from the selected timeslots It also generates a G703 frame...

Page 20: ...e on the VT100 screen however this function cannot be accessed using the front panel TS0 is always selected it is either regenerated by the OM25 or passed transparently inverted in both directions It...

Page 21: ...or Tera Term to 19 200 baud 8 bits no parity 1 stop bit and Xon Xoff The following screen will be displayed once the the OM25 has completed its power on sequence Press the spacebar to display the Log...

Page 22: ...This is a limited access mode that only allows the user to view the current status of the unit To access this mode press R then return to enter this mode The Screen will now prompt you to enter a pass...

Page 23: ...25 18 Main Menu Urgent Alarm On Non Urgent Alarm Off A Alarms C Configuration I Information L Logout P Performance S Security T Test Type selection F1 Help OOOOOOO MM MM 22222 5555555555 OOOOOOOOOOO...

Page 24: ...to return to the main menu If the monitoring mode has been set to off default setting then the following message will be displayed for around 5 seconds before the screen reverts to the initial OM25 sc...

Page 25: ...N SCREENS Pressing the appropriate key activates its associated menu There is no need to press return In fact pressing return will in most cases have the undesired effect of exiting the selected scree...

Page 26: ...ave unit can only view its local information OM25 Thu 01 Jan 1970 00 03 33x Performance Optical Urgent Alarm On Non Urgent Alarm On Subsystem Slave View Local Statistics Table ES SES UAS BBE Time Elap...

Page 27: ...he return key to accept the configuration Note The configuration is not accepted until the return key is pressed In this way mistakes can be corrected before the data is entered Beware though if you e...

Page 28: ...f three possible options Full Control Loops Only or Disabled It would not make sense to set it to be both Full Control and Disabled at the same time so we only allow one of the three options to be set...

Page 29: ...ation Configure User Port System Subsystem Names Monitoring Reboot Serial Communications Front Panel Allows you to reboot the system Set date time and menu timeout Enter name description and location...

Page 30: ...he acknowledgement fix the fault then clear F5 the alarm OM25 Fri 02 Jan 1970 01 24 51 Alarm Status Urgent Alarm On Non Urgent Alarm Off Display Filters Level 1 2 X 3 X 4 X 5 X Status Off Update X No...

Page 31: ...t alarms Status Off Update X To turn off automatic updates of this screen Use the cursors to select the Status Off Update X field Pressing the space bar toggles the setting The screen will not update...

Page 32: ...Name Toggles the subsystem display field between name and ID F5 Clear History Removes ALL entries from the fault log OM25 Thu 01 Jan 1970 00 02 45 Alarm History Urgent Alarm On Non Urgent Alarm Off Di...

Page 33: ...n A description of the alarm The ON suffix indicates the recorded time and date the alarm went active OFF indicates when the alarm became inactive Records the exact time the event occurred Records the...

Page 34: ...on Urgent Alarm On Non Urgent Alarm On Management Mode Master Slave Independant DSL Gender Co Cpe Manangement Mode changes will cause unit to reboot F1 Help F3 Previous Menu F4 Main Menu Configuration...

Page 35: ...ance monitoring history is saved at the master When the management terminal is connected to the master it can read all of the information from the local and remote units whereas when the management te...

Page 36: ...ter Port Type OM25 V35 Rate nx64 32 Enable Loops Timing Control Lines Internal 106 Clamp On External 107 Clamp On Loop 109 Clamp On End to end Signalling Press Return to Accept or Escape to Cancel F1...

Page 37: ...Port Urgent Alarm On Non Urgent Alarm On Subsystem Master Unit Type OM25 G703 75 Ohm Timing Framing TS0 Control Through E1Unframed Regenerated Local E1 Inverted Loop E1Crc E1Mf Channelisation E1CrcMf...

Page 38: ...t or Escape to Cancel F1 Help F3 Previous Menu F4 Main Menu Use TAB to select fields Configuration Master Slave User Port Master slave configuration Configure User Port System Subsystem Names Monitori...

Page 39: ...onfiguration System Urgent Alarm On Non Urgent Alarm Off Date 01 01 1970 Time 24Hr 00 28 Inactive Time Out min 30 Press Return to Accept or Escape to Cancel F1 Help F3 Previous Menu F4 Main Menu Confi...

Page 40: ...ystem Names Urgent Alarm On Non Urgent Alarm Off Subsystem No 1 Name Slave Description Unknown Location Unknown Press Return to Accept or Escape to Cancel F1 Help F3 Previous Menu F4 Main Menu Configu...

Page 41: ...per fault Over time a complete list of faults will be seen OM25 Thu 01 Jan 1970 00 52 52 Configuration Monitoring Urgent Alarm On Non Urgent Alarm Off Monitoring Mode Report Faults With Warning Bell...

Page 42: ...be left continuously connected to the master or slave after the operator has logged out This mode may then be used to register the indication of alarms externally The dumb terminal may be used to repo...

Page 43: ...ss Return to Accept or Escape to Cancel F1 Help F3 Previous Menu F4 Main Menu F5 Default Configuration Master Slave User Port Master slave configuration Configure User Port System Subsystem Names Moni...

Page 44: ...er if the new screen is not displayed correctly you may have to reset your local terminal b If the characters still appear corrupt then choose a lower baud rate Description Speed at which characters a...

Page 45: ...ent Alarm Off Subsystem Slave Front Panel Buttons Full Control Loops Only Disabled Press Return to Accept or Escape to Cancel F1 Help F3 Previous Menu F4 Main Menu Configuration Master Slave User Port...

Page 46: ...ersion number for the software being run Booter version Displays the version number for the boot strap loader Firmware version Displays the version number for the firmware OM25 Thu 01 Jan 1970 02 42 1...

Page 47: ...when no SES have occured OM25 Thu 01 Jan 1970 00 03 33x Performance Optical Urgent Alarm On Non Urgent Alarm On Subsystem Slave View Local Statistics Table ES SES UAS BBE Time Elapsed Current 0 0 212...

Page 48: ...s optical link has suffered from framing errors LES Line errored seconds Total line errored seconds OM25 Thu 01 Jan 1970 00 26 33 Performance USER Urgent Alarm On Non Urgent Alarm On Subsystem Slave V...

Page 49: ...the system When the password is recognised on entry of the final password character the password field is enabled This field always displays its contents as asterisks and has a maximum length of 10 c...

Page 50: ...s the traffic back to the optical line V 54 Remote Loop Sets a loopback on the remote unit OM25 Thu 01 Jan 1970 05 22 45 Test Loopbacks Urgent Alarm On Non Urgent Alarm Off Subsystem Slave Local Loop...

Page 51: ...l controls have been previously set to Loops only or Input disabled from the VT100 Front Panel configuration screen it will not be possible to enter Programming Mode 7 2 OPERATION The Local Loop butto...

Page 52: ...CO User Port Rate 2 n 2 128kbps User Port Rate 3 n 4 256kbps User Port Rate 4 n 8 512kbps User Port Rate 5 n 10 640kbps User Port Rate 6 n 12 768kbps User Port Rate 7 n 16 1024kbps User Port Rate 8 n...

Page 53: ...ameter Value 0010 0000 0001 0000 0001 0010 Parameter Number 3 4 Meaning Timing Loop Timing Through Timing Local Unframed E1 CRC disabled E1 CRC enabled RL 1 0 LB 1 0 LL 0 1 0011 0100 E1 CAS CRC disabl...

Page 54: ...sport an RS 232 link transparently across the fibre path independently from the main data payload Repeating this action converts the port back to its management function the 3 left most LEDs flash red...

Page 55: ...epend upon to optical fibre used The better the quality of fibre the further the range achieved Typical figures given below Loss budget Long Haul 31dB Short Haul 16dB 8 3 AC POWER INLET AC power is fe...

Page 56: ...m CGND to earth is required for ESD protection of the unit Mating connector Molex Minifit Junior Receptacle Molex Part Number 39 01 4031 Molex female contact Molex Part Number 39 00 0039 8 5 DC MAINS...

Page 57: ...al wipe The optical connector on the unit must be cleaned by blowing clean oil and dust free compressed air down the centre of the optical connector 8 6 3 FC PC CONNECTOR This connector is more common...

Page 58: ...This type if plug is fitted with an anti pull out feature this prevents the accidental removal of the plug from the connector SC Connector 8 7 INTERFACE CONNECTIONS 8 7 1 G 703 120 OHM INTERFACE The G...

Page 59: ...ription Receive Data Common Return Transmit Data Request To Send Ready For Sending Data Set Ready Received Signal Detector Terminal Signal Element Timing Transmitter Signal Element Timing Receiver Sig...

Page 60: ...8 7 4 V 35 EXTERNAL TIMING ADAPTOR CABLE PINOUT CCITT circuit Timing Source DCE Timing Sink DTE CCITT circuit 103 A P R 104 A 103 B S T 104 B 104 A R P 103 A 104 B T S 103 B 105 C F 109 109 F C 105 11...

Page 61: ...or on the front panel The socket is wired to allow a straight connection to a PC serial port The serial port setting is 19200 baud 8 bits no parity 1 stop bit and Xon Xoff flow control The RS232C inte...

Page 62: ...Humidity 5 to 95 non condensing 8 9 2 STORAGE ETS 300 019 1 1 Class 1 1 Storage in a totally weatherproof and partially temperature controlled environment in its standard packaging Temp range 5 to 45...

Page 63: ...OM25 short Haul G 703 120 ohms 1 356 213 9 2 OM25 DC POWERED Description Order Number OM25 Long Haul V 35 1 356 121 OM25 Long Haul G 703 75 ohms 1 356 122 OM25 Long Haul G 703 120 ohms 1 356 123 OM25...

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